Rope-guiding device for grooved or ribbed winding-drums.



F. LOBNITZ. ROPE GUIDING DEVICE FOR GROOVED 0R RIBBED WINDING DRUMS.

APPLICATON FILED MAY 20. |915.

' Patented Sept. 19, 1916.

UNITED STATES PATENT FFICE.

FRED LOBNITZ, OF CROOKSTON, NEAR GLASGOW, SCOTLAND.

ROPE-GUIDING DEVICE FOR GROGVED OB RIBBED IVINDING-DRUMS.

Application led May 20, 1915.

To all whom t may concern.' Y

Be it known that I, FRED LoBNrrz, a subject of the King of Great Britain, residing at Crookston, near Glasgow, Scotland, have invented certain new and useful Improvements in Rope-Guiding Devices for Grooved or Ribbed lVinding-Drums, of which the following is a specification.

The subject of this invention is a device for guiding ropes as they are being wound on and ofi" a spirally grooved or ribbed winch or other` winding drum.

The invention is specially designed for use with double rope suspensions for rock cutting apparatus such as set forth in the specification of my prior Patent, No. 1,149,846, dated August 10th. 1915. rIhe device prevents or tends to prevent the ropes of the suspension over-riding one another when being coiled upon the winch drum.

The device forming the present invention is automatic in action and consists of a movable arm with guide means for the double rope or ropes and a follower on the arm which works on the grooved or ribbed surface of the drum as it is rotated, thereby moving the arm and guide means to guide the ropes as they are being wound and unwound.

The invention is illustrated in the accompanying drawings, in which,

Figure 1 represents a side view of the device as applied to the spirally grooved winch drum of a rock cutting apparatus in which the cutter has a double rope suspension. Figs. 2 and 3 are respectively a plan and an end view corresponding to Fig. 1. Figs. 4, 5, and 6 are detail views of the follower.

Similar reference letters refer to similar parts throughout the several views.

A is the winding drum for the double rope suspension B. The guide for the suspension B is constituted by an arm a; pivotally supported at I), to the shear leg structure D of the rock cutting apparatus, and having, at its end, a forked or slotted guide c, through which the ropes pass to the drum A. The guide o is caused to move laterally, as the ropes are being wound on and off the drum, by a follower rl. The follower d, as more clearly seen in Figs. 3, 4, and 5, is in the form of an oblong block curved at its under side Z1 to suit the periphery of the drum and is made with curvilinear ridges e which work in the grooves E of the drum and, as the drum rotates, its grooves E cause the fol- Specication of Letters Patent.

Patented Sept. 19,1916. Serial No. 29,439.

lower to move laterally and' therefore move the guide c to which the follower is attached by means of a block 7 and screw g. '1

The guide c shown is formed of two metal bars or pieces of angle iron t; and tl secured at z' to the arm a so as to leave a suitable space therebetween for the passage of the ropes. The ends of the pieces t and tl are connected by a bolt j and are maintained at a suitable distance apart by a distance piece jl while the block f for the follower is secured between the pieces zf and k1 by bolts f1.

It will now be apparent that I have invented a novel and useful rope guiding device, and while I have, in the present instance, shown and described a preferred embodiment thereof, it is to be understood that the same is susceptible to modification without departing from the spiritv or scope of the invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent is l. A rope guiding device for a grooved or ribbed winding drum, consisting of a laterally movable arm, means on said arm forming a guide for the rope, and a follower secured to said means and having curvilinear ridges adapted to engage two of the grooves of the drum.

2. A rope guiding device for a grooved or ribbed winding drum, consisting of a laterally movable arm, means on said arm forming a guide for the rope, and an oblong follower removably secured to said means and having curvilinear ridges adapted to engage two of the grooves of the drum.

3. A rope guiding device for a grooved or ribbed winding drum, consisting of a movable arm, means on said arm forming a guide for the rope, a block removably fitted in connection with said means, and a follower removably iitted in connection with said block said follower resting on and being automatically moved in a lateral direction by the drum.

4. A rope guiding device for a grooved or ribbed winding drum, consisting of a movable arm, means on said arm constituting a guide for the rope, and a follower in connection with the arm said follower being curved longitudinally and also having at its underside two curved and parallel ridges adapted to engage the irregularities of the surface of the drum and be moved thereby.

5. A rope guiding device for a grooved or ribbed winding drum, consisting of a pivotal arm, means on said arm constituting a guide for the rope, a block carried by said means, and a follower screwed to said block said follower being adapted to engage two of the grooves oi' the drum and be moved thereby in a lateral direction as the drum rotates.

6. A rope guiding' device for a grooved or ribbed winding drum7 consisting of a piv- 10 otal arm, a guide secured to the end thereof,

a block secured in said guide and a follower pivotally secured to said block and adapted to engage the grooves of the drum.

In testimony whereof I affix my signature in presence of two witnesses.

FRED LOBNITZ.

Witnesses:

JAMES R. Woon, L. A. DroKsoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

